20326160

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6197}}^1$

素因数の和:6251

約数の個数: 40

約数和(自身を含む): 48418776

約数和(自身を除く): 28092616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6197, 12394, 24788, 30985, 49576, 61970, 99152, 123940, 247880, 254077, 495760, 508154, 1016308, 1270385, 2032616, 2540770, 4065232, 5081540, 10163080, 20326160]

約数ペア:

[(1, 20326160), (2, 10163080), (4, 5081540), (5, 4065232), (8, 2540770), (10, 2032616), (16, 1270385), (20, 1016308), (40, 508154), (41, 495760), (80, 254077), (82, 247880), (164, 123940), (205, 99152), (328, 61970), (410, 49576), (656, 30985), (820, 24788), (1640, 12394), (3280, 6197)]